CN110528093A - A method of producing elastomeric overmold line - Google Patents
A method of producing elastomeric overmold line Download PDFInfo
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- CN110528093A CN110528093A CN201810504826.XA CN201810504826A CN110528093A CN 110528093 A CN110528093 A CN 110528093A CN 201810504826 A CN201810504826 A CN 201810504826A CN 110528093 A CN110528093 A CN 110528093A
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- cortical material
- core wire
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- cortex
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/02—Heat treatment
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/12—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyamide as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/16—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Multicomponent Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Harvester Elements (AREA)
Abstract
The present invention provides a kind of methods for producing elastomeric overmold line, comprising: cortical material melting is squeezed out together with core wire by coating machine, cortical material is coated on core wire surface, forms covering thread；Be less than or equal to cortical material melting temperature at a temperature of, cortical material is set in core wire surface, in process of setting, applies tensile stress to covering thread, and under tension and temperature collective effect, cortical material, which is crystallized, to be occurred simultaneously with mutually separating；The phase separation refers to the separation of crystalline region and amorphous area；Then it is cooled and shaped.The present invention passes through heat setting process, it realizes cortex radial contraction, combined with core wire axial shrinkage (being radially expanded), cortex is combined closely with core wire, to improve intensity, buckle resistance, scratch resistance wearability and elastic restoration ratio, stretch, bending and compression rebound rate are more than 99%；When stretching, bend and squeezing, core wire is not easily stripped with cortex.
Description
Technical field
The present invention relates to a kind of preparation method of fiber more particularly to a kind of preparation methods of elastomeric overmold line.
Background technique
The long filament or yarn of higher-strength are the preferred materials of many shoes, outdoor goods, knapsack etc.；Usual long filament or
There is easily hook silk, not wear-resisting, non-watertight etc. in use and lack in the multifilament that yarn is made of the tiny monofilament of many roots
Point.Current solution is usually impregnation, coating or coating processing to be carried out to textile, but after processing, textile is distinctive
Interfibrous gap is capped, sacrifices gas permeability, flexibility, gloss, lines sense of textile etc., and between coating and fabric
Often because difference in shrinkage influences its usability, stickiness etc..If multifilament is changed into the monofilament of same thickness, although can solve
The problem of hooking silk, but monofilament has Boardy Feeling, poor, not resistant to bending, the non-water-tight defect of comfort.
Have to solve the above problems, carrying out the method that external sheath waterproof layer prepares covering thread as core wire using high-strength multifilament
Production and application, can not only retain the soft advantage of original multifilament in this way, but can overcome its easily hook silk, it is not wear-resisting, do not prevent
The shortcomings that water.Currently, the raw material that cladding waterproof layer uses also has patented technology using PE, PP etc., these materials based on PVC
Since resilience is poor, lead to that covering thread is resistant to bending, clad is loosely easily peeled off in conjunction with core wire, especially
PVC poor processability needs a large amount of processing aid, such as plasticizer.
Summary of the invention
In view of the defect of above-mentioned art methods, it is high, resistant to bending, high-intensitive simultaneous that the present invention provides a kind of elastic recovery rate
Has the production method of the elastomeric overmold lines of characteristics such as waterproof.
The present invention provides a kind of methods for producing elastomeric overmold line, comprising:
Cortical material melting, is squeezed out together with core wire by coating machine, and cortical material is coated on core wire surface, forms packet
Cover line；
Be less than or equal to cortical material melting temperature at a temperature of, cortical material is set in core wire surface, in process of setting,
Tensile stress is applied to covering thread, under tension and temperature collective effect, cortical material, which is crystallized, to be occurred simultaneously with mutually separating；It is described
Mutually separation refers to the separation of crystalline region and amorphous area；
It is cooled and shaped.
In an advantageous embodiment, the temperature appointing between cortical material glass transition temperature and melting temperature
Meaning temperature value or temperature range, it is preferable that do not include cortical material glass transition temperature, cortical material melting temperature.
It is highly preferred that the temperature is 50 DEG C under cortical material melting temperature to core wire melting temperature or less.More preferably
Temperature is heated under cortical material melting temperature 30 DEG C to below core wire melting temperature by ground.
In an advantageous embodiment, 200 DEG C of cortical material melting temperature <, more preferably≤180 DEG C, more preferably institute
Stating cortical material melting temperature is to be at least 50 DEG C, more preferably 80-180 DEG C, more preferably 100-150 DEG C.
In an advantageous embodiment, cortical material includes the first cortical material and the second cortical material, in which: the first skin
Layer material melting temperature T1 meets: 120 < T1 < 200 DEG C, more preferably 140-180 DEG C；The second cortical material melting temperature
T2 is preferably 40-120 DEG C, more preferably 50-100 DEG C, more preferably 50-80 DEG C.
Wherein, the first cortical material and the second cortical material can be mixture, or be also possible to block copolymer, example
Such as, different blocks of first cortical material from the second cortical material as block copolymer.
In an advantageous embodiment, core wire melting temperature >=200 DEG C, more preferably >=220 DEG C, more preferably >=250
℃。
In an advantageous embodiment, the core wire intensity preferably >=0.5cN/dtex, more preferably >=1cN/dtex,
More preferably >=1.5cN/dtex, more preferably >=2cN/dtex, more preferably >=2.5cN/dtex, more preferably >=3cN/
Dtex, more preferably >=3.5cN/dtex, more preferably >=4cN/dtex, more preferably >=4.5cN/dtex.
In an advantageous embodiment, cortical material melt viscosity under extrusion temperature is at least 500Pas, more
Preferably 800~2000Pas, preferably 1000-1500Pas.
In an advantageous embodiment, the tensile stress that applies is to be greater than extruded velocity by stretching the speed of covering thread
To realize.It is highly preferred that the speed for stretching covering thread is at least 1.01 times of extruded velocity, more preferably 1.01-1.5 times, more
Preferably 1.05-1.2 times, such as 1.1 times.
In an advantageous embodiment, the speed for stretching covering thread is 1-1000m/min, preferably 2-900m/
Min, more preferably 5-800m/min.
In an advantageous embodiment, control the cortex after cooling and shaping with a thickness of 0.01-0.1mm, more have choosing
For 0.05-0.8mm, it is more selected as 0.1-0.5mm.
In an advantageous embodiment, the cortical material is thermoplastic elastomer (TPE).
It is highly preferred that the thermoplastic elastomer (TPE), can be addition polymer or condensation polymer, the addition can be homopolymerization
Object or copolymer, the copolymer can be block copolymer, alternate copolymer, random copolymer, one in graft copolymer
Kind is several.
It is highly preferred that the thermoplastic elastomer can be phenylethylene thermoplastic elastomer, diene class thermoplastic elastomer, poly- ammonia
It is esters thermoplastic elastomer, olefin type thermoplastic elastomer, polyurethanes thermoplastic elastomer, polyesters thermoplastic elastomer, polyamide-based
One or more of thermoplastic elastomer, organic siliconresin.It is highly preferred that the thermoplastic elastomer can be polyurethane thermal-plastic's bullet
The mixing of one or more of property body (TPU), polyether ester thermoplastic elastomer (TPEE) or polyetheramides thermoplastic elastomer.
Preferably, the thermoplastic elastic can be not higher than 1% pigments or dyes containing mass ratio.
Preferably, the thermoplastic elastic can be not higher than 10% color master-batch containing mass ratio.
Preferably, the thermoplastic elastomer can contain auxiliary agent, and the auxiliary agent can be including but not limited to: enhancing
One or more of agent, fire retardant, preservative, lubricant, age resister.It is highly preferred that the auxiliary agent does not include plasticizer.
It is highly preferred that auxiliary agent mass ratio in the thermoplastic elastic is not higher than 5%, more preferably not above
3%, more preferably not above 1%.
Preferably, the core wire can be including but not limited to: plant fiber, animal origin, regenerated fiber, synthesis are fine
Any one or a few in dimension.
Wherein, the plant fiber can be one or more of flax fiber, bamboo fibre, cotton fiber.
Wherein, the animal origin can be one or more of wool, camel hair, the rabbit hair, silk fiber.
Wherein, the synthetic fibers can be one of polyester, polyamide, polyimides, carbon fiber, acrylic fibers, polypropylene fibre
Or it is several.
It includes synthetic fibers that core wire of the present invention, which is preferably at least, can specifically include PET, PBT, PA6, PA66 industry
The combination of one or more of long filament.
Preferably, the core wire is also possible to coloured.
In above content of the present invention, the core wire is long filament, and preferably multifilament.
In above content of the present invention, the long filament can be the silk twisted or do not twisted.
Wherein, the long filament continuous length is preferably at least 1m, more preferably at least 10m, more preferably at least 100m,
More preferably at least 1000m.
In above content of the present invention, given numberical range may each be finger chosen out of this it is one or more
Fixed numbers or numerical intervals.
The method that the present invention produces elastomeric overmold line, has the advantages that
1) pass through heat setting process, realize cortex radial contraction, combined with core wire axial shrinkage (being radially expanded),
Cortex is combined closely with core wire, to improve intensity, buckle resistance, scratch resistance wearability and elastic restoration ratio, is stretched, bending
It is more than 99% with compression rebound rate；When stretching, bend and squeezing, core wire is not easily stripped with cortex；
2) the application uses melt-processed, does not use solvent and plasticizer, and product safety is nontoxic；
3) core wire provides good stretching using in the case where high-tenacity multifilament yarn, having soft, tough special efficacy for covering thread
Intensity and buckling strength；
4) cortex and core wire are thermoplastic material, can pass through recycling and reusing.
Specific embodiment
Elastomeric overmold line produced by the invention, is made of cortex and core wire, and cortex is thermoplastic elastomer (TPE), such as be can be
The mixing of one or more of polyurethane (TPU), polyether ester (TPEE) or polyetheramides.The core wire is long filament, such as can
To be the combination of one or more of polyester, polyamide 6, polyamide 66 industrial filament.
Embodiment 1 (EX1)
Polyester filament is not twisted in the material selection urethane thermoplastic elastomer of cortex, core wire selection.Thermoplastic elastomer (TPE) can
To be not higher than 1% pigments or dyes containing mass ratio, by the way that pigments or dyes are added, make covering thread that there is corresponding color
Effect can remove the dyeing in subsequent textile processing from.Equally, core wire is also possible to coloured.
The preparation method step of elastomeric overmold yarn are as follows:
Step 1
Polyurethane after melting is coated by coating machine and is squeezed out, the surface of core wire is coated on, obtains covering thread.Squeeze out temperature
Degree is greater than melt polyurethane temperature, and controlling polyurethane melt viscosity in extrusion process is 16000PaS.
Step 2
The covering thread of extrusion is cooled to melt polyurethane temperature or less, more than glass transition temperature, and polyurethane solidifies simultaneously
It is evenly distributed on the surface of polyester filament core wire, the other end is on roller.
In the present invention, in winding process, winding forms covering thread and stretches, and tensile speed is greater than extruded velocity, such as stretches
Speed/extruded velocity=1.2 then forms a tensile stress to covering thread.
To which under the collective effect of tension and temperature, while cortical material crystallizes, crystalline phase and amorphous phase exist
Occur mutually to separate in drawing process.
Into the heat setting process is crossed, cortex is radially shunk to core wire；Core wire internal stress is eliminated simultaneously, and axis occurs
It to contraction, i.e., is radially expanded to cortex, the cortical material of core filaments and endosmosis is combined closely.Cortex and core wire
The crystallinity and the degree of orientation of long filament are all improved, so that cortex is combined closely with core wire.
Step 3
Cooling forming, clot.
The elastomeric overmold yarn skin thickness that the present embodiment obtains is 0.1mm, and elastic recovery rate is 99% or more.
Embodiment 2 (EX2)
The material selection polyether ester of cortex, core wire select the combination of polyester filament and polyamide filaments (to can be and do not twist
Or twisting), the mass ratio of polyester and polyamide filaments is 2:1.Cortical material uses the material (example of two kinds of different melting temperatures
Can such as be realized using the polyether ester of different molecular weight), the first cortical material melting temperature is 150 DEG C, the second seed coat layer
Material melt temp is 100 DEG C.
The preparation method step of elastomeric overmold yarn are as follows:
Step 1
Polyethers ester material after melting is coated by coating machine and is squeezed out, the surface of core wire is coated on, obtains covering thread.It squeezes
Temperature is 150 DEG C out.
Step 2
The covering thread of extrusion is cooled to polyether ester melting temperature or less, more than glass transition temperature, and polyether ester solidifies simultaneously
It is evenly distributed on the surface of polyamide filaments core wire, the other end is on roller.
In the present invention, in winding process, winding forms covering thread and stretches, and tensile speed is greater than extruded velocity, such as stretches
Speed/extruded velocity=1.05 then forms a tensile stress to covering thread.
To which under the collective effect of tension and temperature, while cortical material crystallizes, crystalline phase and amorphous phase exist
Occur mutually to separate in drawing process.
Into the heat setting process is crossed, cortex is radially shunk to core wire；Core wire internal stress is eliminated simultaneously, and axis occurs
It to contraction, i.e., is radially expanded to cortex, the cortical material of core filaments and endosmosis is combined closely.Cortex and core wire
The crystallinity and the degree of orientation of long filament are all improved, so that cortex is combined closely with core wire.
Step 3
The elastomeric overmold yarn skin thickness that the present embodiment obtains is 0.2mm, and elastic recovery rate is 99% or more.
Second of cortical material for being 100 DEG C comprising melting temperature in cortical material in the present embodiment, using the present embodiment
The product that the covering thread of acquisition is made into can be under 100 DEG C of temperatures above again if deformed in the long-term use
Sizing.
Embodiment 3 (EX3)
The material selection polyetheramides of cortex, core wire select PA66 long filament.Cortical material is using two kinds of different melting temperatures
Material (such as can be realized using the polyetheramides of different molecular weight), the first cortical material melting temperature be 150 DEG C,
Second of cortical material melting temperature is 50 DEG C.
The preparation method step of elastomeric overmold yarn are as follows:
Step 1
Polyetheramide materials after melting are coated by coating machine and are squeezed out, the surface of core wire is coated on, obtains covering thread.
Extrusion temperature is 180 DEG C.
Step 2
The covering thread of extrusion is cooled to polyetheramides melting temperature or less, more than glass transition temperature, and polyetheramides is solidifying
Consolidate and be evenly distributed on the surface of PA66 long filament core wire, the other end is on roller.
In the present invention, in winding process, winding forms covering thread and stretches, and tensile speed is greater than extruded velocity, such as stretches
Speed/extruded velocity=1.05 then forms a tensile stress to covering thread.
To which under the collective effect of tension and temperature, while cortical material crystallizes, crystalline phase and amorphous phase exist
Occur mutually to separate in drawing process.
Into the heat setting process is crossed, cortex is radially shunk to core wire；Core wire internal stress is eliminated simultaneously, and axis occurs
It to contraction, i.e., is radially expanded to cortex, the cortical material of core filaments and endosmosis is combined closely.Cortex and core wire
The crystallinity and the degree of orientation of long filament are all improved, so that cortex is combined closely with core wire.
Step 3
The elastomeric overmold yarn skin thickness that the present embodiment obtains is 0.2mm, and elastic recovery rate is 99% or more.
Second of cortical material for being 50 DEG C comprising melting temperature in cortical material in the present embodiment, is obtained using the present embodiment
The product that the covering thread obtained is made into, such as shoes, in the process of wearing, human body temperature is enough to bring it about is formed again, thus
Obtain more comfortable shoes shape.Be made into other products, if deformed in the long-term use, can 50 DEG C with
It is formed again at upper temperature.
Embodiment 4 (EX4)
The material selection polyetheramides of cortex, core wire select PET long filament.
The preparation method step of elastomeric overmold yarn are as follows:
Step 1
Polyetheramide materials after melting are coated by coating machine and are squeezed out, the surface of core wire is coated on, obtains covering thread.
Extrusion temperature is 180 DEG C.
Step 2
The covering thread of extrusion is cooled to polyetheramides melting temperature or less, more than glass transition temperature, and polyetheramides is solidifying
Consolidate and be evenly distributed on the surface of PET long filament core wire, the other end is on roller.
In the present invention, in winding process, winding forms covering thread and stretches, and tensile speed is greater than extruded velocity, such as stretches
Speed/extruded velocity=1.1 then forms a tensile stress to covering thread.
To which under the collective effect of tension and temperature, while cortical material crystallizes, crystalline phase and amorphous phase exist
Occur mutually to separate in drawing process.
Into the heat setting process is crossed, cortex is radially shunk to core wire；Core wire internal stress is eliminated simultaneously, and axis occurs
It to contraction, i.e., is radially expanded to cortex, the cortical material of core filaments and endosmosis is combined closely.Cortex and core wire
The crystallinity and the degree of orientation of long filament are all improved, so that cortex is combined closely with core wire.
Step 3
Cooling forming, clot.
The elastomeric overmold yarn skin thickness that the present embodiment obtains is 0.15mm, and elastic recovery rate is 99% or more.Comparative example 1
(P1)
Polyester filament is not twisted in the material selection PE of cortex, core wire selection.
The preparation method step of wrap yarn are as follows:
Step 1
PE after melting is coated by coating machine and is squeezed out, the surface of core wire is coated on, obtains covering thread.Extrusion temperature is
100℃。
Step 2
The covering thread of extrusion is cooled to room temperature through subcooled water or cold air, and PE solidifies and is coated on the table of polyester filament core wire
Face, the other end is on roller.
Winding speed is equal to extruded velocity, not formed tensile stress.
Step 3
Cooling forming, clot.
Comparative example 2 (P2)
Polyester filament is not twisted in the material selection PE of cortex, core wire selection.
The preparation method step of wrap yarn are as follows:
Step 1
PE after melting is coated by coating machine and is squeezed out, the surface of core wire is coated on, obtains covering thread.Extrusion temperature is
100℃。
Step 2
The covering thread of extrusion is cooled to room temperature through subcooled water or cold air, and PE solidifies and is coated on the table of polyester filament core wire
Face, the other end is on roller.
Winding speed is greater than extruded velocity, forms tensile stress, but since cooling is too fast, can not be formed and mutually be separated.
Step 3
Cooling forming, clot.
Gained elastomeric overmold line method for testing performance of the invention is as follows:
1, waterproofness
Use the surface contact angle of contact angle instrument (contact angle measurement, surface tension instrument) measurement material and water, contact angle
Bigger, then waterproofness is better.
2, intensity detection
According to the intensity of GB/T 14344-2008 testing elastic covering thread.
3, elastic recovery rate detects
According to FZ/T70006-2004 testing elastic response rate.
4, scratch resistance is wear-resisting
Martindale's method tests anti-fluffing ball grade.
Gained elastomeric overmold line performance test results of the invention are as follows:
Table 1, the present embodiment 1-4 covering thread testing result
| EX1 | EX2 | EX3 | EX4 | P1 | P2 | |
| To water contact angle (degree) | 150 | 155 | 157 | 153 | - | - |
| Tensile break strength (cN/dtex) | 4.0 | 3.7 | 3.7 | 3.3 | - | - |
| Hook strength rate (%) | > 95 | > 95 | > 95 | > 95 | - | - |
| Elastic recovery rate (%) | > 99 | > 99 | > 99 | > 99 | 52 | 53 |
| Anti-fluffing and anti-pilling grade | 5 | 5 | 5 | 5 | Difference | Difference |
As it can be seen that the method provided by the present application for preparing elastomeric overmold line, occurs due to crystallizing and mutually separating, simultaneously thus really
The good elastic recovery rate of cortical material and buckle resistance and wearability are protected.
Specific embodiments of the present invention are described in detail above, but it is merely an example, the present invention is simultaneously unlimited
It is formed on particular embodiments described above.To those skilled in the art, any couple of present invention carries out equivalent modifications and
Substitution is also all among scope of the invention.Therefore, without departing from the spirit and scope of the invention made by equal transformation and
Modification, all should be contained within the scope of the invention.
Claims (10)
1. a kind of method for producing elastomeric overmold line characterized by comprising
Cortical material melting, is squeezed out together with core wire by coating machine, and cortical material is coated on core wire surface, forms cladding
Line；
Be less than or equal to cortical material melting temperature at a temperature of, cortical material is set in core wire surface, in process of setting, to packet
It covers line and applies tensile stress, under tension and temperature collective effect, cortical material, which is crystallized, to be occurred simultaneously with mutually separating；The phase point
From the separation for referring to crystalline region and amorphous area；
It is cooled and shaped.
2. the method according to claim 1, wherein the temperature is cortical material glass transition temperature and melts
Melt arbitrary temp value or the temperature range between temperature.
3. according to the method described in claim 2, it is characterized in that, the temperature is extremely to melt for 50 DEG C under cortex melting temperature
Below temperature.
4. the method according to claim 1, wherein 200 DEG C of cortical material melting temperature <, core wire melting temperature
≥200℃。
5. elastomeric overmold line according to claim 1, which is characterized in that cortical material includes the first cortical material and second
Cortical material, in which: the first cortical material melting temperature T1 meets: 120 < T1 < 200 DEG C, second cortical material are molten
Melting temperature T2 is 40-120 DEG C.
6. elastomeric overmold line according to claim 5, which is characterized in that the first cortical material and the second cortical material are mixed
Object is closed, and/or: different blocks of first cortical material from the second cortical material as block copolymer.
7. the method according to claim 1, wherein the tensile stress that applies is the speed by stretching covering thread
Degree is greater than extruded velocity to realize.
8. the method according to the description of claim 7 is characterized in that the speed for stretching covering thread is 1-1000m/min.
9. the method according to the description of claim 7 is characterized in that the speed for stretching covering thread is the 1.01 of extruded velocity
Times or more.
10. the method according to claim 1, wherein cortical material melt viscosity 800 under extrusion temperature
~2000Pas.
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| CN201810504826.XA CN110528093B (en) | 2018-05-24 | 2018-05-24 | Method for producing elastic covered wire |
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| CN201810504826.XA CN110528093B (en) | 2018-05-24 | 2018-05-24 | Method for producing elastic covered wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774590A (en) * | 2021-08-19 | 2021-12-10 | 东莞市利鸿柏斯针织有限公司 | Preparation method of woven product based on TPU (thermoplastic polyurethane) yarns |
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| CN113774590A (en) * | 2021-08-19 | 2021-12-10 | 东莞市利鸿柏斯针织有限公司 | Preparation method of woven product based on TPU (thermoplastic polyurethane) yarns |
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